Lighting system for a vehicle light

Abstract

A lighting system (1) for a vehicle light, comprising a first illuminant (L1), a second illuminant (L2), and a light guide (4) arranged relative to the first illuminant (L1) and the second illuminant (L2) in such a way that light emitted by the two illuminants (L1, L2) is coupled into the light guide (4) and coupled out via a light coupling-out section (4c) of the light guide (4), wherein the lighting system (1) has a light guide channel element (6) arranged between the second illuminant (L2) and the light guide (4), wherein the light guide channel element (6) has a plurality of light guide channels (7) arranged next to one another, wherein each light guide channel (7) has a wall (8) designed in such a way that a light beam from the second illuminant (L2) is widened in a first plane (E1) and in a second plane (E2) which is orthogonal to the first plane (E2), is narrowed.

Description

Technical field

[0001] The invention relates to a lighting system for a vehicle lamp, in particular for a motor vehicle headlight, the lighting system comprising: * a first illuminant configured to emit light along a first light emission direction, * a second illuminant comprising a plurality of individually controllable light sources, wherein the individual light sources are arranged at a distance from one another on a light source carrier of the second illuminant and are configured to emit light along a second light emission direction, which is different from the first light emission direction, * a light guide, in particular an optical fiber, which is arranged downstream of the second illuminant along the second light emission direction, wherein the light guide has a first light coupling section, from which a lateral surface delimiting the light guide extends along an axial longitudinal extent of the light guide,wherein a rear side of the lateral surface is designed as a second light coupling section and a front side of the lateral surface opposite the rear side is designed as a light decoupling section, wherein the light guide to the first illuminant is arranged in such a way that light emitted by the first illuminant is coupled into the light guide via the first light coupling section, wherein light coupled in by the first illuminant spreads axially within the lateral surface, in particular at least in sections, along the longitudinal extent of the light guide, wherein the light guide is designed in such a way that light coupled in via the first light coupling section is coupled out via the light decoupling section of the light guide along the second light emission direction, wherein the light decoupling section, in particular the entire front side of the lateral surface and / or the entire rear side of the lateral surface, is designed to be diffusely scattering,wherein the light guide is arranged relative to the second illuminant such that the longitudinal extent of the light guide is oriented substantially orthogonally to the second light emission direction, the second light coupling section of the lateral surface faces the second illuminant and the light coupling section of the lateral surface faces away from the second illuminant.

[0002] The invention further relates to a vehicle lamp, for example a motor vehicle headlight, or a vehicle, preferably a motor vehicle, comprising a lighting system. Technical background

[0003] Lighting systems that use a light guide to emit light are known in the prior art. Typically, the light guide, together with a light source, serves to generate a static (in the sense of non-animated or without an animation effect) lighting function. A dynamic, high-resolution lighting function, which is intended to be generated in addition to or in addition to the static lighting function, is not provided for in light guide-based systems. As is known, a dynamic, high-resolution lighting function is generated using a further or additional light module (or lighting device). For example, a static rear light of a motor vehicle can be generated with a first light module having a light guide, and a dynamic, animated direction indicator with a second light module having a plurality of LEDs.The integration of both light modules into a single system is not provided for in the current state of the art, as the generation of animated and high-resolution light functions with a single light guide is not possible. The known solutions, which use different light modules for dynamic / high-resolution light functions and static light functions, are disadvantageously complex, as two separate light modules must be used.

[0004] The object of the present invention is to alleviate or eliminate the disadvantages of the prior art. The invention therefore aims, in particular, to create a lighting system with which high-resolution, dynamic, and static lighting functions can be generated easily and with high homogeneity.

[0005] This object is achieved by a lighting system having the features of claim 1. Preferred embodiments are specified in the dependent claims. Brief description of the invention

[0006] According to the invention, the lighting system has a light guide channel element which is arranged between the second illuminant and the rear side of the lateral surface, wherein the light guide channel element has a plurality of light guide channels arranged next to one another, which open at the second light coupling section of the lateral surface, wherein each light source of the second illuminant is assigned a light guide channel in such a way that light from a light source enters the light guide channel via a light entry region of the light guide channel assigned to the light source and exits the light guide channel via a light exit region of the light guide channel, wherein the light guide channel element is arranged to the rear side of the lateral surface in such a way that each light exit region is assigned a partial region of the second light coupling section, so that light which exits from a light exit region of a specific light guide channel,strikes that part of the second light coupling section which is assigned to the light exit area of ​​the corresponding light guide channel, , wherein light coupled in via the partial regions of the second light coupling section passes radially through the light guide and couples out via the light coupling-out section of the light guide along the second light emission direction, wherein each light guide channel is formed from a wall delimiting the light guide channel, which wall extends between the light entry region and the light exit region along the second light emission direction, preferably in a funnel shape, wherein the wall has side surfaces which are designed such that a light beam entering the light guide channel from a light source of the second illuminant is, by reflection or scattering on side surfaces, wider at the light exit region than at the light entry region in a first plane which is oriented parallel to the axial longitudinal extent of the light guide, and that a light beam entering the light guide channel from a light source of the second illuminant,by reflection or scattering on side surfaces, in a second plane, which is oriented orthogonally to the first plane and orthogonally to the axial length of the light guide, is narrower at the light exit area than at the light entry area.

[0007] This has the advantage that the light from the second light source is broadened in the first plane by the light guide channel element (or when passing through the light guide channels of the light guide channel element) onto the second light coupling surface and is bundled in the second. This allows, on the one hand, a high quantity of light to reach the second light coupling surface and, on the other hand, the most homogeneous radiation behavior possible can be achieved between adjacent sections of the light coupling surface (which are illuminated by light from adjacent light guide channels). This allows a first, static lighting function to be generated with the first light source and the light guide, and at the same time a second, high-resolution and / or dynamic lighting function to be generated with the second light source, which radiates radially through the light guide.Preferably, the distance between two adjacent light sources of the second illuminant is 10 to 50 mm, preferably 15 to 45 mm, in particular 20 to 40 mm. The second light sources are preferably arranged along the entire axial length of the light guide. In particular, the light guide is illuminated axially with the light of the first illuminant and simultaneously radially with the light of the second illuminant.

[0008] It can be provided that the wall has at least four side surfaces, wherein two side surfaces are opposite one another in pairs, wherein a first side surface pair, which is formed from two side surfaces which are arranged at a distance from one another along the axial longitudinal extent of the light guide, diverge from one another along the second light propagation direction, wherein a second side surface pair, which is formed from two side surfaces which are arranged at a distance from one another along a radial direction of the light guide which is orthogonal to the axial longitudinal extent, converge towards one another along the second light propagation direction.

[0009] It can be provided that the lighting system has a cover plate which is arranged along the second light emission direction after the light guide channel element and preferably after the light guide, wherein the cover plate preferably has a holding section to which the light guide is fastened.

[0010] It can be provided that the lighting system has a cover plate which is arranged along the second light emission direction after the light guide channel element and preferably after the light guide, wherein the cover plate has a region which is transparent to the light of the first illuminant and the second illuminant and which is surrounded by a region which is opaque to the light of the first illuminant and the second illuminant, wherein the cover plate is arranged in relation to the light guide channel element and the light guide in such a way that light which is coupled out of the light coupling-out section of the light guide preferably passes exclusively through the transparent region of the cover plate.

[0011] It can be provided that the light sources are arranged on the light source carrier along an imaginary line and thus form a row of light sources, wherein the row of light sources preferably follows the axial longitudinal extent of the light guide.

[0012] It can be provided that the optical fiber is designed to be substantially cylindrical, wherein the first light coupling section is formed on a base surface of the cylindrical optical fiber and the second light coupling section and the light coupling section are formed on a cylinder jacket, in particular on opposite sides of a cylinder jacket, of the cylindrical optical fiber.

[0013] It can be provided that the light guide and the first light source are designed to generate a daytime running light.

[0014] It can be provided that the light guide and the plurality of light sources of the second illuminant are designed to generate a, in particular dynamic, signal light, for example a direction indicator or a flashing light with a running light effect.

[0015] It can be provided that light which is coupled into the light guide by the first illuminant propagates within the light guide by means of total reflection at the lateral surface along the longitudinal extent of the light guide.

[0016] It can be provided that the first illuminant is arranged relative to the second illuminant such that the first light emission direction is oriented orthogonally to the second light emission direction.

[0017] It can be provided that the light guide channel element is designed in such a way that light coupled out of the light guide channels illuminates the entire second light coupling region of the lateral surface, wherein the light guide channel element is preferably designed as a light guide aperture.

[0018] It can be provided that the first pair of side surfaces and / or the second pair of side surfaces have a surface designed to diffusely scatter light from the second illuminant, wherein preferably the first pair of side surfaces and / or the second pair of side surfaces is designed to have a diffusely scattering coating and / or to be matt white or opaque white, or wherein the first pair of side surfaces and / or the second pair of side surfaces is designed to be reflective, preferably diffusely, for light from the second illuminant, and in particular has a preferably diffusely reflective coating, for example a metallic coating.

[0019] It can be provided that the light guide channel element is designed in such a way that light which is coupled out from two adjacent light guide channels impinges on the second light coupling section without overlap.

[0020] It can be provided that light of the second illuminant coupled in via the partial regions of the second light coupling section overlaps with the light which is radially coupled into the light guide by the first illuminant via the first light coupling region, after coupling out via the light coupling section along the second light emission direction.

[0021] It can be provided that the light guide channel element has a fastening section to which the light guide is fastened. The fastening section can be funnel-shaped or frustoconical, in particular the fastening section can be trapezoidal in a sectional plane which is oriented parallel to the second plane, or the fastening section can be trench-shaped along the axial longitudinal extent of the light guide. The light guide can lie within a tapered funnel opening of the fastening section or be held there. The fastening section can be arranged along the second light emission direction downstream of the light exit regions of the light guide channels, and preferably in front of a cover plate. Preferably, a base (the longer base side) of the trapezoidal fastening section is further (orfacing away) and the shorter base side of the trapezoidal fastening section opposite the base is closer to (or facing) the illuminant, wherein preferably the base of the trapezoidal fastening section is shorter than the diameter of the light guide.

[0022] It can be provided that the wall delimiting a light guide channel delimits a cavity through which the light of the light source associated with the light guide channel passes.

[0023] It can be provided that the cavity is free of optically active elements, for example one or more lenses, optical fibers or optical fibers.

[0024] A vehicle lamp, for example a motor vehicle headlight, or a vehicle comprising a lighting system may be provided.

[0025] For the purposes of this description, the terms "top", "bottom", "horizontal" and "vertical" are to be understood as indicating the orientation when the lighting system is arranged in the normal position of use after it has been installed in a motor vehicle or a motor vehicle headlamp. Short description of the characters

[0026] The invention will be explained in more detail below with reference to schematic drawings of an embodiment. Fig. 1 a schematic view of a lighting system according to the invention; Fig. 2 a sectional view of the lighting system according to Fig. 1 ; and Fig. 3 a rear view of the lighting system according to Fig. 1 . Detailed description of the embodiments

[0027] Fig. 1shows an exemplary embodiment of a lighting system 1 for a vehicle light according to the invention, wherein the vehicle light can be, for example, a motor vehicle headlight, a component of a motor vehicle headlight, or a signal light for a motor vehicle.

[0028] Fig. 2 shows a top view of a section through the Fig. 1 shown lighting system, where the section is through a, in the plane of the page of Fig. 1 , horizontal cutting plane.

[0029] Fig. 3 shows a rear view of the Fig. 1 lighting system shown.

[0030] The lighting system 1 comprises a first illuminant L1, which is configured to emit light along a first light emission direction R1.

[0031] The lighting system 1 further comprises a second illuminant L2, which has a plurality of individually controllable light sources 2. The individual light sources 2 are arranged spaced apart from one another on a light source carrier 3 (for example, a flexible printed circuit board) of the second illuminant L2 and are configured to emit light along a second light emission direction R2 (cf. Fig. 2 ), which is different from the first light emission direction R1.

[0032] In the embodiment shown, the first illuminant L1 is arranged relative to the second illuminant L2 such that the first light emission direction R1 is oriented orthogonally to the second light emission direction R2. The sectional plane of the Fig. 2 shown sectional view, lies parallel to the second light emission direction R2 and intersects the light sources 2 of the second illuminant L2.

[0033] The lighting system 1 comprises a light guide 4, for example an optical fiber, which is arranged downstream of the second illuminant L2 along the second light emission direction R2. The light guide 4 has a first light coupling section 4a, from which a lateral surface 5 bounding the light guide extends along an axial longitudinal extent x of the light guide 4. A rear side of the lateral surface 5 (facing the second illuminant L2) is configured as a second light coupling section 4b, and a front side of the lateral surface 5 opposite the rear side (facing away from the second illuminant L2) is configured as a light coupling section 4c.

[0034] The light guide 4 is arranged relative to the first illuminant L1 in such a way that light emitted by the first illuminant L1 is coupled into the light guide 4 via the first light coupling section 4a. Light coupled in by the first illuminant L1 propagates axially within the lateral surface 5, in particular at least in sections, along the longitudinal extent x of the light guide 4. Light coupled into the light guide 4 by the first illuminant L1 can propagate within the light guide 4 by means of total reflection at the lateral surface 5 along the longitudinal extent x of the light guide 4. The light guide 4 is designed in such a way that light coupled in via the first light coupling section 4a is coupled out via the light coupling section 4c of the light guide 4 along the second light emission direction R2.For this purpose, for example, deflecting prisms are provided on the inside of the rear side of the lateral surface, which deflect the coupled-in light towards the light output section 4c. The light output section 4c, in particular the entire front side of the lateral surface 5 and / or the entire rear side of the lateral surface 5, is / are designed to be diffusely scattering. This means that after being coupled out of the light guide 4, the light does not have a specific direction or not all light rays are oriented parallel to one another, but rather, for example, form a light emission cone around the second light emission direction R2 or spread divergently in space. The light emission behavior of the light guide 4 can, for example, be approximated by the emission behavior of a diffuser or a Lambert radiator.

[0035] The light guide 4 is further arranged relative to the second illuminant L2 in such a way that the longitudinal extent x of the light guide 4 is oriented substantially orthogonally to the second light emission direction R2 (cf. Fig. 2 ). The second light coupling section 4b of the lateral surface 5 faces the second illuminant L2, and the light coupling section 4c of the lateral surface 5, in turn, faces away from the second illuminant L2. In the exemplary embodiment shown, the light guide 4 is essentially cylindrical. The first light coupling section 4a is formed on a base surface of the cylindrical light guide, and the second light coupling section 4b and the light coupling section 4c are formed on a cylindrical jacket, in particular on opposite sides of a cylindrical jacket, of the cylindrical light guide 4. The light guide 4 and the first illuminant L1 can be configured to generate daytime running lights.

[0036] In the exemplary embodiment shown, the light sources 2 are arranged on the light source carrier 3 along an imaginary line and thus form a row of light sources. The row of light sources follows the axial longitudinal extent x of the light guide 4, with a distance of more than 0 mm, in particular a distance between 10 mm and 50 mm, being provided between two light sources. The light guide 4 and the plurality of light sources 2 of the second illuminant L2 can, for example, be configured to generate a signal light, in particular a dynamic one, for example a direction indicator or a flashing light with a running light effect. Because the light sources 2 can be controlled individually, a running light effect can be generated, for example by successively switching on adjacent light sources 2.

[0037] The lighting system 1 comprises a light guide channel element 6, which is arranged between the second illuminant L2 and the rear side of the lateral surface 5. The light guide channel element 6 has a plurality of adjacently arranged light guide channels 7, each of which opens at the second light coupling section 4b of the lateral surface 5.

[0038] As in Fig. 2As can be seen, each light source 2 of the second illuminant L2 is assigned a light guide channel 7. Light from a specific light source 2 enters the light guide channel 7 via a light entry region 7a of the light guide channel 7 assigned to it. At the end of the light guide channel 7, the light exits the light guide channel 7 again via a light exit region 7b of the light guide channel 7. The light guide channel element 6 is arranged towards the rear side of the lateral surface 5 in such a way that a partial region of the second light coupling section 4b is assigned to each light exit region 7b. This allows light emerging from a light exit region 7b of a specific light guide channel 7 to strike that partial region of the second light coupling section 4b which is assigned to the light exit region 7b of the corresponding light guide channel 7.Light coupled in via the partial regions of the second light coupling section 4b passes radially through the light guide 4 and is then coupled out via the light coupling-out section 4c of the light guide 4 along the second light emission direction R2.

[0039] In the exemplary embodiment shown, the light guide channel element 6 is designed such that light coupled out from the light guide channels 7 illuminates the entire second light coupling region 4b of the lateral surface 5, wherein the light guide channel element 6 is preferably designed as a light guide aperture. Furthermore, in the exemplary embodiment shown, the light guide channel element 6 is designed such that light coupled out from two adjacent light guide channels 7 impinges on the second light coupling section 4b without overlap. Light coupled in via the partial regions of the second light coupling section 7b can overlap with the light which is radially coupled into the light guide 4 by the first illuminant L1 via the first light coupling region 4a, after coupling out via the light coupling section 4c along the second light emission direction R2.Depending on the (on / off) operating state of the first illuminant L1 and the second illuminant L2, only light from the first illuminant L1, only light from the second illuminant L2, or a total light from the first illuminant L1 and the second illuminant L2 can be coupled out of the light guide 4.

[0040] Each light guide channel 7 comprises a wall 8 delimiting the light guide channel 7. This wall extends, for example in a funnel shape, between the light entry region 7a and the light exit region 7b along the second light emission direction R2. The wall 8 can delimit a cavity through which the light from the light source 2 assigned to the light guide channel 7 passes. The cavity can be free of optically active elements, for example one or more lenses, optical fibers, or optical fiber optics.

[0041] The wall 8 has side surfaces 8a, 8b, 8c, 8d which, on the one hand, are designed such that a light beam entering the light guide channel 7 from a light source 2 of the second illuminant L2 is, by reflection or scattering on side surfaces 8a, 8b, in a first plane E1 which is oriented parallel to the axial longitudinal extent x of the light guide 4, wider at the light exit area 7b than at the light entry area 7a.

[0042] On the other hand, the side surfaces 8a, 8b, 8c, 8d are designed such that a light beam entering the light guide channel 7 from a light source 2 of the second illuminant L2 is, by reflection or scattering on side surfaces 8c, 8d, narrower at the light exit region 7b than at the light entry region 7a in a second plane E2, which is oriented orthogonally to the first plane E1 and orthogonally to the axial longitudinal extent x of the light guide 4.

[0043] As in Fig. 2As can be seen, the wall 8 comprises at least four side surfaces 8a, 8b, 8c, 8d, with two side surfaces lying opposite each other in pairs.

[0044] A first pair of side surfaces, which is formed from two side surfaces 8a, 8b, which are arranged at a distance from one another along the axial longitudinal extent x of the light guide 4, diverges from one another along the second light propagation direction R2.

[0045] A second pair of side surfaces, which consists of two side surfaces 8c, 8d (cf. Fig. 1 and Fig. 3 ), which are arranged at a distance from one another along a radial direction z of the light guide 4 orthogonal to the axial longitudinal extent x, extend converging towards one another along the second light propagation direction R2.

[0046] The first side surface pair 8a, 8b and / or the second side surface pair 8c, 8d can have a surface designed to diffusely scatter light from the second illuminant L2. The first side surface pair 8a, 8b and / or the second side surface pair 8c, 8d can have a diffusely scattering coating and / or be matt white or opaque white. The first side surface pair (8a, 8b) and / or the second side surface pair (8c, 8d) can also be designed to reflect light from the second illuminant L2, preferably diffusely, and can in particular have a preferably diffusely reflecting coating, for example a metallic coating.

[0047] The lighting system may have an (optional) cover plate 9, which is arranged along the second light emission direction R2 downstream of the light guide channel element 6 and preferably downstream of the light guide 4. The cover plate 9 may have a holding section 9a to which the light guide 4 is attached or against which the light guide rests, for example with the front side of the lateral surface 5.

[0048] The cover plate 9 can have a region that is transparent to the light from the first illuminant L1 and the second illuminant L2, which is surrounded by a region that is opaque to the light from the first illuminant L1 and the second illuminant L2. The cover plate 9 can be arranged relative to the light guide channel element 6 and the light guide 4 such that light that is coupled out of the light coupling section 4c of the light guide 4 preferably passes exclusively through the transparent region of the cover plate 9.

[0049] The light guide channel element 6 can have a fastening section 6a to which the light guide 4 is fastened.

[0050] In the illustrated embodiment, the fastening section 6a is trench-shaped or, in a section through the plane E2, trapezoidal. The fastening section 6a ends at the cover plate 9, whereby the light guide 4 is held in position by the cover plate 9 and the fastening section 6a or fastened along the direction R2 and along the direction z. In the illustrated embodiment, in the plane E2, the light guide channel 7 and the adjoining fastening section 6a are double-funnel-shaped or hourglass-shaped. LIST OF REFERENCE SYMBOLS

[0051] 1Lighting system 2Light sources 3Light source carrier 4Light guide 4aFirst light coupling section 4bSecond light coupling section 4cLight coupling section 5Shell surface 6Light guide channel element 6aFastening section 7Light guide channel 7aLight entry area of ​​a light guide channel 7bLight exit area of ​​a light guide channel 8Wall 8a, 8first pair of side surfaces 8c, 8dSecond pair of side surfaces 9Cover plate 9aHolding section of the cover plate E1First plane E2Second plane L1First light source L2Second light source R1First light emission direction R2Second light emission direction XAxial longitudinal extent ZRadial direction

Claims

1. A lighting system (1) for a vehicle light, in particular for a motor vehicle headlight, comprising: a first illuminant (L1) configured to emit light along a first light emission direction (R1); a second illuminant (L2) comprising a plurality of individually controllable light sources (2), wherein the individual light sources (2) are arranged at a distance from one another on a light source carrier (3) of the second illuminant (L2) and are configured to emit light along a second light emission direction (R2), which is different from the first light emission direction (R1); a light guide (4), in particular an optical fiber, arranged downstream of the second illuminant (L2) along the second light emission direction (R2), wherein the light guide (4) has a first light coupling section (4a);from which a lateral surface (5) delimiting the light guide extends along an axial longitudinal extent (x) of the light guide (4), wherein a rear side of the lateral surface (5) is designed as a second light coupling section (4b) and a front side of the lateral surface (5) opposite the rear side is designed as a light coupling section (4c), wherein the light guide (4) is arranged relative to the first illuminating means (L1) in such a way that light emitted by the first illuminating means (L1) couples into the light guide (4) via the first light coupling section (4a), wherein light coupled in by the first illuminating means (L1) propagates axially within the lateral surface (5), in particular at least in sections, along the longitudinal extent (x) of the light guide (4), wherein the light guide (4) is designed in such a way,that light coupled in via the first light coupling section (4a) is coupled out via the light coupling section (4c) of the light guide (4) along the second light emission direction (R2), wherein the light coupling section (4c), in particular the entire front side of the lateral surface (5) and / or the entire rear side of the lateral surface (5), is designed to be diffusely scattering, wherein the light guide (4) is arranged relative to the second illuminating means (L2) in such a way that the longitudinal extent (x) of the light guide (4) is oriented substantially orthogonally to the second light emission direction (R2), the second light coupling section (4b) of the lateral surface (5) faces the second illuminating means (L2) and the light coupling section (4c) of the lateral surface (5) faces away from the second illuminating means (L2), , characterized in thatthe lighting system (1) has a light-guiding channel element (6) which is arranged between the second illuminant (L2) and the rear side of the lateral surface (5), wherein the light-guiding channel element (6) has a plurality of light-guiding channels (7) arranged next to one another, which open at the second light-coupling section (4b) of the lateral surface (5), wherein each light source (2) of the second illuminant (L2) is assigned a light-guiding channel (7) in such a way that light from a light source (2) enters the light-guiding channel (7) assigned to the light source (2) via a light inlet region (7a) of the light-guiding channel (7) and exits the light-guiding channel (7) via a light outlet region (7b) of the light-guiding channel (7), wherein the light-guiding channel element (6) is arranged towards the rear side of the lateral surface (5) in such a way that each light outlet region (7b) is assigned a partial region of the second light-coupling section (4b), so that light,which emerges from a light exit region (7b) of a specific light guide channel (7), strikes that partial region of the second light coupling section (4b) which is assigned to the light exit region (7b) of the corresponding light guide channel (7), wherein light coupled in via the partial regions of the second light coupling section (4b) passes radially through the light guide (4) and is coupled out via the light coupling-out section (4c) of the light guide (4) along the second light emission direction (R2), wherein each light guide channel (7) is formed from a wall (8) delimiting the light guide channel (7), which wall extends between the light entry region (7a) and the light exit region (7b) along the second light emission direction (R2), preferably in a funnel shape, wherein the wall (8) has side surfaces (8a, 8b, 8c, 8d) which are designed in such a way,that a light beam entering the light guide channel (7) from a light source (2) of the second illuminant (L2) is, by reflection or scattering on side surfaces (8a, 8b), wider at the light exit region (7b) than at the light entry region (7a) in a first plane (E1) oriented parallel to the axial longitudinal extent (x) of the light guide (4), and that a light beam entering the light guide channel (7) from a light source (2) of the second illuminant (L2) is, by reflection or scattering on side surfaces (8c, 8d), narrower at the light exit region (7b) than at the light entry region (7a) in a second plane (E2) oriented orthogonal to the first plane (E1) and orthogonal to the axial longitudinal extent (x) of the light guide (4).

2. Lighting system according to claim 1, wherein the wall (8) has at least four side surfaces (8a, 8b, 8c, 8d), wherein two side surfaces are opposite one another in pairs, wherein a first side surface pair, which is formed from two side surfaces (8a, 8b) which are arranged at a distance from one another along the axial longitudinal extent (x) of the light guide (4), diverge from one another along the second light propagation direction (R2), wherein a second side surface pair, which is formed from two side surfaces (8c, 8d) which are arranged at a distance from one another along a radial direction (z) of the light guide (4) orthogonal to the axial longitudinal extent (x), converge towards one another along the second light propagation direction (R2).

3. Lighting system according to one of the preceding claims, wherein the lighting system has a cover plate (9) which is arranged along the second light emission direction (R2) after the light guide channel element (6) and preferably after the light guide (4), wherein the cover plate (9) preferably has a holding section (9a) to which the light guide (4) is fastened.

4. Lighting system according to one of the preceding claims, wherein the lighting system has a cover plate (9) which is arranged along the second light emission direction (R2) after the light guide channel element (6) and preferably after the light guide (4), wherein the cover plate (9) has a region which is transparent to the light of the first illuminant (L1) and the second illuminant (L2), which region is surrounded by a region which is opaque to the light of the first illuminant (L1) and the second illuminant (L2), wherein the cover plate (9) is arranged relative to the light guide channel element (6) and the light guide (4) in such a way that light which is coupled out of the light coupling-out section (4c) of the light guide (4) preferably passes exclusively through the transparent region of the cover plate (9).

5. Lighting system according to one of the preceding claims, wherein the light sources (2) are arranged on the light source carrier (3) along an imaginary line and thus form a row of light sources, wherein the row of light sources preferably follows the axial longitudinal extent (x) of the light guide (4).

6. Lighting system according to one of the preceding claims, wherein the light guide (4) is substantially cylindrical, wherein the first light coupling section (4a) is formed on a base surface of the cylindrical light guide and the second light coupling section (4b) and the light coupling section (4c) are formed on a cylinder jacket, in particular on opposite sides of a cylinder jacket, of the cylindrical light guide (4).

7. Lighting system according to one of the preceding claims, wherein the light guide (4) and the first illuminant (L1) are configured to generate a daytime running light, wherein preferably the light guide (4) and the plurality of light sources (2) of the second illuminant (L2) are configured to generate a, in particular dynamic, signal light, for example a direction indicator or a flashing light with a running light effect.

8. Lighting system according to one of the preceding claims, wherein light which is coupled into the light guide (4) by the first illuminant (L1) propagates within the light guide (4) by means of total reflection at the lateral surface (5) along the longitudinal extent (x) of the light guide (4).

9. Lighting system according to one of the preceding claims, wherein the first illuminant (L1) is arranged relative to the second illuminant (L2) such that the first light emission direction (R1) is oriented orthogonally to the second light emission direction (R2).

10. Lighting system according to one of the preceding claims, wherein the light guide channel element (6) is designed such that light coupled out of the light guide channels (7) illuminates the entire second light coupling region (4b) of the lateral surface (5), wherein the light guide channel element (6) is preferably designed as a light guide aperture.

11. Lighting system according to one of the preceding claims, wherein the first pair of side surfaces (8a, 8b) and / or the second pair of side surfaces (8c, 8d) have a surface designed to diffusely scatter light from the second illuminant (L2), wherein preferably the first pair of side surfaces (8a, 8b) and / or the second pair of side surfaces (8c, 8d) have a diffusely scattering coating and / or are designed to be matt white or opaque white, or wherein the first pair of side surfaces (8a, 8b) and / or the second pair of side surfaces (8c, 8d) are designed to be reflective, preferably diffusely, for light from the second illuminant (L2), and in particular have a preferably diffusely reflective coating, for example a metallic coating.

12. Lighting system according to one of the preceding claims, wherein the light guide channel element (6) is designed such that light which is coupled out from two adjacent light guide channels (7) impinges on the second light coupling section (4b) without overlap, wherein light of the second illuminant (L2) coupled in via the partial regions of the second light coupling section (7b) preferably overlaps with that light which is radially coupled into the light guide (4) by the first illuminant (L1) via the first light coupling region (4a), after coupling out via the light coupling section (4c) along the second light emission direction (R2).

13. Lighting system according to one of the preceding claims, wherein the light guide channel element (6) has a fastening section (6a) to which the light guide (4) is fastened.

14. Lighting system according to one of the preceding claims, wherein the wall (8) delimiting a light guide channel (7) delimits a cavity through which the light of the light source (2) associated with the light guide channel (7) passes, wherein the cavity is preferably free of optically active elements, for example one or more lenses, optical fibers or optical fibers.

15. Vehicle lamp, in particular motor vehicle headlight, comprising a lighting system according to one of the preceding claims.

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